38 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
exceeding the ventral cornu in length. Ventral cornu dentiform, very 
strong, and sharply pointed; distinctly separated from the teeth of the 
median process. Median process with 20 or more small, sharply 
pointed, conglomerate teeth. Basal process represented by a short, 
bluntly rounded projection of the mesosome. 
Larva: Antennal tuft located in a constriction near the outer third; 
antennal shaft spiculate basally. Postclypeal head hair 4 short, 
single; upper and lower frontal head hairs 5 and 6 long, triple; pre- 
antennal head hair 7 long, multiple. Mentum rather broad with about 
17 teeth; apical tooth very broad and larger than the lateral teeth; 
lateral teeth progressively smaller apically. Comb with numerous 
scales in a patch; each scale rounded apically and fringed with sub- 
equal spinules. Siphonal index about 2.5 to 3.0; four multiple siphonal 
tufts on the distal third of the siphon. Pecten with about 16 teeth 
extending to the apex of the siphon; each tooth, except for the apical 
four teeth, with several small barbs on one side; apical four teeth not 
barbed, strong, straight, and pointed. Anal segment glabrous, 
completely ringed by the saddle. 
MATERIAL EXAMINED.— Six male specimens from Panama, one male 
from Para, Brazil, and the lectotype male terminalia from Surinam. 
DistriBuTION.— This species has been reported from Panama, Suri- 
nam, French Guiana, and Brazil. 
Culex (Culex) brethesi Dyar, 1919 
Ficures 9a, b 
Culex (Culex) brethesi Dyar, 1919, p. 86. 
Systematics.— This species was originally described by Dyar (1919) 
from a figure of a male terminalia published by Bréthes (1916). The 
position of this species was questionable until work by Bachmann and 
Casal (1962) in which the terminalia was redescribed and the immature 
stages described for the first time. 
Culex brethest is a member of the restuans-laticlasper-acharistus 
complex, all species with a reduced mesosome. It is distinguished by 
possessing only one accessory seta next to the leaf on the apical lobe 
of the basistyle. 
SALIENT CHARACTERS.— Adult female: See table 1. 
Male terminalia: Basistyle conical, less than twice as long as the 
basal width; clothed with fine setae in addition to normal, long setal 
pattern. Apical lobe of the basistyle prominent, undivided, and also 
clothed with fine setae. Appendicles of the apical lobe as follows: 
basal rod strong, very slightly hooked at apex; median rod broader and 
slightly longer than basal rod, prominently hooked at apex; apical rod 
about as broad as basal rod and with a prominent apical curve; leaf 
